At least 50 people have been killed by two bombings near the tomb of Iranian Revolutionary Guards general Qasem Soleimani on the fourth anniversary of his assassination, state media say.

State broadcaster Irib said another 60 people were wounded when the blasts hit a procession near the Saheb al-Zaman mosque in the southern city of Kerman.

It cited Kerman's deputy governor as saying it was a "terrorist attack".

A video circulated online appeared to show several bodies on a road.

Hundreds of people were reportedly walking towards the tomb on Wednesday as part of a ceremony to commemorate Gen Soleimani, who was killed in a US drone strike in neighbouring Iraq in 2020.

Soleimani was seen as the most powerful figure in Iran after the Supreme Leader, Ayatollah Ali Khamenei.

As commander of the Revolutionary Guards' overseas operations arm, the Quds Force, he was an architect of Iranian policy across the region.

He was in charge of the Quds Force's clandestine missions and its provision of guidance, funding, weapons, intelligence, and logistical support to allied governments and armed groups, including Hamas and Hezbollah.

Then-US President Donald Trump, who ordered the 2020 assassination, described Soleimani as "the number-one terrorist anywhere in the world".